Functions
static TestStatus	Buffercmp (uint8_t pBuffer1, uint8_t pBuffer2, uint16_t BufferLength)
	Compares two buffers.
static void	Fill_Buffer (uint8_t *pBuffer, uint16_t BufferLength)
	Fills buffer.
void	HardFault_Handler (void)
	This function handles Hard Fault exception.
int	main (void)
	Main program.
void	NMI_Handler (void)
	This function handles NMI exception.
void	PendSV_Handler (void)
	This function handles PendSVC exception.
static JOYState_TypeDef	Read_Joystick (void)
	Reads key from evaluationboard.
void	SVC_Handler (void)
	This function handles SVCall exception.
void	SysTick_Handler (void)
	This function handles SysTick Handler.
static void	SysTickConfig (void)
	Configure a SysTick Base time to 10 ms.
static void	TimeOut_UserCallback (void)
	Basic management of the timeout situation.
static void	USART_Config (void)
	Configures the USART Peripheral.
Variables
uint8_t	AckBuffer [0x02] = {0x00, 0x00}
uint8_t	CmdBuffer [0x02] = {0x00, 0x00}
__IO uint8_t	Counter = 0x00
DMA_InitTypeDef	DMA_InitStructure
__IO JOYState_TypeDef	PressedButton = JOY_NONE
uint8_t	RxBuffer [RXBUFFERSIZE]
__IO uint32_t	TimeOut
__IO uint32_t	TimeOut = 0x0
uint8_t	TxBuffer [] = "USART DMA Example: Communication between two USART using DMA"

Function Documentation

static TestStatus Buffercmp	(	uint8_t *	pBuffer1,
		uint8_t *	pBuffer2,
		uint16_t	BufferLength
	)		`[static]`

Compares two buffers.

Parameters:

pBuffer1,pBuffer2,:	buffers to be compared.
BufferLength,:	buffer's length

Return values:

PASSED,: pBuffer1 identical to pBuffer2 FAILED: pBuffer1 differs from pBuffer2

Definition at line 623 of file STM32F0xx_StdPeriph_Examples/USART/USART_TwoBoards/DataExchangeDMA/main.c.

References FAILED, and PASSED.

Referenced by main().

static void Fill_Buffer	(	uint8_t *	pBuffer,
		uint16_t	BufferLength
	)		`[static]`

Fills buffer.

Parameters:

pBuffer,:	pointer on the Buffer to fill
BufferLength,:	size of the buffer to fill

Return values:

None

Definition at line 644 of file STM32F0xx_StdPeriph_Examples/USART/USART_TwoBoards/DataExchangeDMA/main.c.

Referenced by main().

void HardFault_Handler ( void )

This function handles Hard Fault exception.

Parameters:

None

Return values:

None

Definition at line 69 of file STM32F0xx_StdPeriph_Examples/USART/USART_TwoBoards/DataExchangeDMA/stm32f0xx_it.c.

int main ( void )

Main program.

Parameters:

None

Return values:

None

< At this stage the microcontroller clock setting is already configured, this is done through SystemInit() function which is called from startup file (startup_stm32f0xx.s) before to branch to application main. To reconfigure the default setting of SystemInit() function, refer to system_stm32f0xx.c file

Definition at line 69 of file STM32F0xx_StdPeriph_Examples/USART/USART_TwoBoards/DataExchangeDMA/main.c.

References AckBuffer, Buffercmp(), CMD_ACK, CMD_DOWN, CMD_DOWN_SIZE, CMD_LEFT, CMD_LEFT_SIZE, CMD_RIGHT, CMD_RIGHT_SIZE, CMD_SEL, CMD_SEL_SIZE, CMD_UP, CMD_UP_SIZE, CmdBuffer, DMA_InitStructure, FAILED, Fill_Buffer(), PressedButton, Read_Joystick(), RxBuffer, SysTickConfig(), TimeOut, TimeOut_UserCallback(), TxBuffer, TXBUFFERSIZE, USART_Config(), USARTx, USARTx_RDR_ADDRESS, USARTx_RX_DMA_CHANNEL, USARTx_RX_DMA_FLAG_GL, USARTx_RX_DMA_FLAG_TC, USARTx_TDR_ADDRESS, USARTx_TX_DMA_CHANNEL, USARTx_TX_DMA_FLAG_GL, USARTx_TX_DMA_FLAG_TC, and USER_TIMEOUT.